﻿//
// DescriptionServer.cs
//
// Author:
//   Scott Peterson <lunchtimemama@gmail.com>
//
// Copyright (C) 2008 S&S Black Ltd.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.IO;
using System.Net;
using System.Xml;

namespace Mono.Upnp.Server.Internal
{
    internal delegate void DescriptionSerializer (XmlWriter writer);

	internal class DescriptionServer : UpnpServer
	{
        private readonly DescriptionSerializer serializer;
        private byte[] description;

        public DescriptionServer (DescriptionSerializer serializer, Uri url)
            : base (url)
        {
            this.serializer = serializer;
        }

        protected override void HandleContext (HttpListenerContext context)
        {
            if (description != null) {
                context.Response.OutputStream.Write (description, 0, description.Length);
            } else {
                Stream stream = new MemoryStream ();
                XmlWriter writer = XmlWriter.Create (stream);
                writer.WriteStartDocument ();
                serializer (writer);
                writer.WriteEndDocument ();
                writer.Flush ();
                stream.Seek (0, SeekOrigin.Begin);
                description = new byte[stream.Length];
                stream.Read (description, 0, description.Length);
                context.Response.OutputStream.Write (description, 0, description.Length);
            }
            context.Response.Close ();
        }
    }
}
